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34kurt
2 years ago
5

Find the missing side length, m.

Mathematics
1 answer:
amid [387]2 years ago
4 0

Answer:

m = 5

Step-by-step explanation:

Remark

This is a proportion question. A proportion is 2 equal ratios. There are 4 parts to a proportion. If 3 are known, the 4th can be found.

Formula

AB/AC = RQ/QS

Givens

AB = m

AC = 2

RQ = 10

QS = 4

Solution

m/2 = 10/4                      Multiply both sides by 2

2m/2 = 2*10/4                Combine

m = 20/4            

m = 5

Answer m = 5

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Three stamps can be attached to each other in various ways.how many ways might three stamps be attached?
ivanzaharov [21]
Let's call the stamps A, B, and C. They can each be used only once. I assume all 3 must be used in each possible arrangement.
There are two ways to solve this. We can list each possible arrangement of stamps, or we can plug in the numbers to a formula. 
Let's find all possible arrangements first. We can easily start spouting out possible arrangements of the 3 stamps, but to make sure we find them all, let's go in alphabetical order. First, let's look at the arrangements that start with A:
ABC
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There are no other ways to arrange 3 stamps with the first stamp being A. Let's look at the ways to arrange them starting with B:
BAC
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Try finding the arrangements that start with C:
C_ _
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Or we can try a little formula; y×(y-1)×(y-2)×(y-3)...until the (y-x) = 1 where y=the number of items.
In this case there are 3 stamps, so y=3, and the formula looks like this: 3×(3-1)×(3-2).
Confused? Let me explain why it works.
There are 3 possibilities for the first stamp: A, B, or C. 
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8 0
3 years ago
Geometry plz help super important
nirvana33 [79]

Answer:

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Step-by-step explanation:

7 0
3 years ago
A rectangle is 19 feet long and 42 feet wide. What is the area of the rectangle, in square yards? Express your answer as a mixed
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Answer:

86\frac{2}{3} yards²

Step-by-step explanation:

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Blababa [14]

Answer:

Step-by-step explanation:

$9.87

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

7 + 6 = 13

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